Multi rib belt is a standard part of your BMW designed to provide the optimum transfer of torque or rotational force from the engine's flywheel to the external parts of the powerhouse. This multi rib belt is typically made from synthetic rubber material that is reinforced with high tension and high tensile strength rubber cords that feature optimum durability and flexibility. These materials also reduce the occurrence of belt stretching, making it more suitable for its function. It also has a wider belt width that ensures good grip and eliminates the use of multiple belts that can add numerous amount of load to the engine. Since it has a wider lip, the multi rib belt has higher tension capabilities that reduce slippage and decrease the occurrence of belt stretching. Using this on your BMW also increases the mechanical efficiency of your external engine parts as it also promotes lower pulley ratio. This reduction could also mean that the engine has lower load rate to make it more capable of bringing more horsepower to drive the wheels. Inspecting the condition of your belt is necessary as excessive glare on both surface of the belt could cause the belt to slip and thus resulting for higher load capacity for the engine to stand and increase in fuel consumption. Replacing the belt of your engine is easy and can be done in less than an hour. Moreover, obtaining a replacement part would be far easier than replacing. This is possible if you acquire it using our online catalog, for we have the widest selection of aftermarket BMW multi rib belts for your replacement needs. We also have huge stock of other auto parts and accessories that are done by top part manufacturers in the industry today. Always remember to acquire your parts from a reliable provider like us to get nothing but high quality guaranteed aftermarket auto products.